Fire-ladder truck



(No Model.) E. B. PRESTON.

FIRE LADDER TRUCK.

Patented 001:; 1, 1889.

u. PETERS. Phelo-Liwnguphsy, Wnilingtun. 0.0.

UNrrEn STATES PATENT rrion.

EVERETT B. PRESTON, OF OHIQAGO, ILLINOIS.

FIRE-LADDER TRUCK.

SE'EGIFICATION forming part of Letters Patent No. 41 1,929, dated October 1, 1889.

Application filed July 27, 1889: $erial No. 318,834. (No modeLi T 60% 1072 0122 it may concern: In the drawings, A represents the rear axle Be it known that I, EVERETT B. PRESTON, of a firuladder truck with its wheels A. a citizen. of the United States, residingin Ohi- B is the truck-frame. cago, in the county of Cook and State of Illi- C is the lower ring of the fifth-wheel, which nois, have invented a new and useful 1111- is connected in the usual manner to the axle, provement in Fire-Ladder Trucks, of which and D is the upper ring of the fifth-wheel, sei the following is a specification. cured rigidly to the frame B.

My invention relates to fire-ladder trucks, E represents the steering wheel or 1nechan and more especially to turn-table extensionism, which may he of any suitable construc- 10 ladder trucks. In these turn-table extention now commonly in use and well known to sion-ladder trucks the truck-frame at both those skilled in the art. the front and rear ends is mounted upon F is the steers nans seat. fifth-wheels, so that both the front and rear G is the locking-bolt by which the two axles can turn in respect to the truck-frame. rings 0 D of the fifth-wheel are rigidlylocked The fifth-wheel at the rear end of the truck together. The lower end of this bolt is made is usually provided with a gearing inechanslightly rounded or conical at g, so that it ism,which is operated by a steersrnan located will readily enter the hole 0 in the fifth-wheel on a seat at the rear end of the truck-frame. ring 0 when the two rings 0 D are turned so As heretofore constructed it is usually necesthat the openings 0 (Z will he in register with 20 sary for the steersnian to hold the steeringeach other. wheel, in order to keep the rear wheels in The loching-boltGis providedwithaspring proper position, as well as to turn the wheels g, inclosed in a suitable case or shell G. for the purpose of steering or guiding the The locking-bolt is made in two parts, G truck. and G the upper part being connected by The obj ect of my iinproveinentis to provide screw-threads to the lower part. This is for 7 5 a simple and eflicient device for autoinaticonvenience of construction. The upper end cally locking the two rings of the rear fifthof the locking-bolt G is pivotally connected wheel together when the rear wheels are parto an operating-lever H, by which the lockallel with the truck-frame. To this end I ing-bolt may be raised,so as to release or un- 0 provide the fifth-wheel with a locking-bolt, lock the fifth-wheel. which passes through suitable openings in the The guard K for the handle end of the leupper and lower rings of the fifth-wheel. ver H is provided with a hook or notch 79 for This locking-holt is actuated by a spring, so holding the locking-bolt in its retracted pothat when the rear wheels are turned parallel sitiou. When it is desired to lock the fifthwith the truck-frame and the holes or openwheel, all the operator is required to do is ings in the two rings of the fifth-wheel are simply to release the lever H from the hook brought into register with each other thelockk, and then when the rear wheels are turned ing-bolt will automatically engage the two parallel with the truck-frame the spring-actrings and lock them together. The bolt is uated locking-bolt G will enter the holecand 4o lifted so as to release or unlock the fifthwvheel lock the two rings of the fifth-wheel rigidly by means of a lever, the handle of which protogether. jects in convenient position for operation by I claimthe steersnian. 1. The combination, in a fire-ladder truck, In the accompanying drawings, which form of the truck-frame with the axle, the fifth- 45 a part of this specification,a11din which siiniwheel, and a locking-bolt engaging the two 5 lar letters of reference indicate like parts, rings of thefifth-wheel, substantially as speci- Figure 1 is a side elevation of a device emfied. bodying my invention. Fig. 2 is an enlarged 2. The combination, in a lire-ladder truck, detail view of the lever-guard, and Fig. 8 is of the truck-frame with the axle, the fifthan enlarged sectional view of the locking-bolt. wheel, and a locking-bolt engaging the two too rings of the fifth-Wheel, said locking-bolt bethe two wheels of the fifth-Wheel for locking ing provided with a spring for actuating the same automatically, substantially as specified.

3. The combination, in a fire-truck, of the truck-frame, the axle, the fifth-'wheeha steering mechanism, and a locking-bolt engaging the same rigidly together, substantially as specified.

EVERETT B. PRESTON.

Witnesses:

EDMUND ADC/00K, EDW. S. EVARTS. 

